100 lines
3.0 KiB
C++
100 lines
3.0 KiB
C++
/* ----------------------------------------------------------------------
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LAMMPS - Large-scale Atomic/Molecular Massively Parallel Simulator
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https://www.lammps.org/, Sandia National Laboratories
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LAMMPS development team: developers@lammps.org
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Copyright (2003) Sandia Corporation. Under the terms of Contract
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DE-AC04-94AL85000 with Sandia Corporation, the U.S. Government retains
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certain rights in this software. This software is distributed under
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the GNU General Public License.
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See the README file in the top-level LAMMPS directory.
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------------------------------------------------------------------------- */
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/* ----------------------------------------------------------------------
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Contributing author: Axel Kohlmeyer (Temple U)
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------------------------------------------------------------------------- */
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#include "dump_movie.h"
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#include "comm.h"
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#include "error.h"
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#include <cstring>
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using namespace LAMMPS_NS;
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/* ---------------------------------------------------------------------- */
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DumpMovie::DumpMovie(LAMMPS *lmp, int narg, char **arg) : DumpImage(lmp, narg, arg)
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{
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if (multiproc || compressed || multifile) error->all(FLERR, "Invalid dump movie filename");
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filetype = PPM;
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bitrate = 2000;
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framerate = 24;
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fp = nullptr;
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}
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/* ---------------------------------------------------------------------- */
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DumpMovie::~DumpMovie()
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{
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if (fp) platform::pclose(fp);
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fp = nullptr;
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}
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/* ---------------------------------------------------------------------- */
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void DumpMovie::openfile()
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{
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if ((comm->me == 0) && (fp == nullptr)) {
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#ifdef LAMMPS_FFMPEG
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auto moviecmd = fmt::format("ffmpeg -v error -y -r {:.2f} -f image2pipe -c:v ppm -i - "
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"-r 24.0 -b:v {}k {}",
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framerate, bitrate, filename);
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fp = platform::popen(moviecmd, "w");
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#else
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fp = nullptr;
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error->one(FLERR, "Support for writing movies not included");
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#endif
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if (fp == nullptr) error->one(FLERR, "Failed to open FFmpeg pipeline to file {}", filename);
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}
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}
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/* ---------------------------------------------------------------------- */
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void DumpMovie::init_style()
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{
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// initialize image style circumventing multifile check
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multifile_override = 1;
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DumpImage::init_style();
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}
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/* ---------------------------------------------------------------------- */
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int DumpMovie::modify_param(int narg, char **arg)
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{
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int n = DumpImage::modify_param(narg, arg);
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if (n) return n;
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if (strcmp(arg[0], "bitrate") == 0) {
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if (narg < 2) error->all(FLERR, "Illegal dump_modify command");
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bitrate = utils::inumeric(FLERR, arg[1], false, lmp);
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if (bitrate <= 0.0) error->all(FLERR, "Illegal dump_modify command");
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return 2;
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}
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if (strcmp(arg[0], "framerate") == 0) {
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if (narg < 2) error->all(FLERR, "Illegal dump_modify command");
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framerate = utils::numeric(FLERR, arg[1], false, lmp);
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if ((framerate <= 0.1) || (framerate > 24.0))
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error->all(FLERR, "Illegal dump_modify framerate command");
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return 2;
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}
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return 0;
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}
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